ET458 FAQ

NORTH EDGE ET458 FAQ

1. What type of watch is the NORTH EDGE ET458?

The ET458 is a premium AMOLED smartwatch focused on health monitoring and smart lifestyle features.

It combines ECG-level health tracking, fitness monitoring, Bluetooth connectivity, and a high-resolution AMOLED display.

2. What health features does the ET458 support?

The ET458 includes advanced health tracking features such as:

  • ECG (Electrocardiogram) monitoring
  • Heart rate tracking (24/7)
  • Blood oxygen (SpO₂) measurement
  • Blood pressure monitoring
  • Sleep tracking
  • Stress / fatigue monitoring
  • One-touch health check (micro-physical examination)

3. Is the ET458 a medical device?

No.

All health data is for fitness and wellness reference only and should not be used for medical diagnosis or treatment.

4. Does the ET458 support Bluetooth calling?

Yes.

After connecting to your smartphone, you can:

  • Make and receive calls via Bluetooth
  • View app notifications
  • Sync health and activity data
  • Control music playback

5. Does the ET458 have built-in GPS?

No.

The ET458 does not include standalone GPS hardware.

It can use your phone’s GPS when connected via the app for activity tracking.

6. What screen does the ET458 use?

The ET458 features a 1.56-inch AMOLED HD display, offering:

  • High brightness
  • Strong contrast
  • Clear outdoor visibility
  • Smooth touch experience

7. Is the ET458 waterproof?

Yes.

It is rated IP68 waterproof, suitable for:

  • Hand washing
  • Rain
  • Sweat
  • Daily water exposure

Not recommended for:

  • Hot showers
  • Sauna / steam rooms
  • Deep diving or high-pressure water

8. Can I swim with the ET458?

It is suitable for light water exposure, but not recommended for professional swimming or diving due to IP68 rating limitations.

9. How do I charge the ET458?

The watch uses a magnetic charging cable.

A full charge usually takes around 2–3 hours.

10. How long does the battery last?

Battery life depends on usage, including:

  • Health monitoring frequency
  • Bluetooth calling usage
  • Screen brightness
  • Notification frequency

Under normal use, it can last several days per charge.

11. What app does the ET458 use?

The ET458 connects to a companion mobile app (varies by region/firmware).

Through the app you can:

  • View health data history
  • Track workouts
  • Customize watch settings
  • Sync notifications

12. Does the ET458 support sports modes?

Yes.

It includes multiple sports modes such as:

  • Running
  • Walking
  • Cycling
  • Indoor workouts
  • Fitness training

13. Can I customize watch faces?

Yes.

The ET458 supports multiple watch faces, and additional designs can be downloaded via the app.

14. Is the ET458 suitable for daily wear?

Yes.

The combination of AMOLED display, lightweight build, and smart functions makes it suitable for:

  • Daily life
  • Fitness training
  • Office use
  • Travel

15. Is the ET458 a standalone smartwatch?

No.

It requires smartphone connection for full functionality (Bluetooth + app sync).

It does not support SIM card or standalone cellular communication.

16. Why are my health readings different from other devices?

Differences may occur due to:

  • Wearing position and tightness
  • Movement during measurement
  • Skin condition
  • Environmental factors

For best accuracy, wear the watch snugly and remain still during measurement.

17. How should I maintain the ET458?

  • Clean the watch regularly
  • Avoid hot water, steam, or sauna exposure
  • Keep sensors clean for accurate readings
  • Charge before battery fully drains
  • Avoid strong impacts

18. What is included in the package?

The package typically includes:

  • NORTH EDGE ET458 Watch
  • Magnetic charging cable
  • User Manual
  • NORTH EDGE Branded Watch Box

Contents may vary slightly by region.

19. Can I replace the strap?

Yes.

The ET458 supports interchangeable straps depending on version (silicone / leather / steel).

20. What warranty does NORTH EDGE provide?

NORTH EDGE provides after-sales support for manufacturing defects under normal use conditions.

If you experience any issue, please contact customer support and provide:

  • Order number
  • Product model
  • Photos or videos of the issue
  • Description of the problem

Our team will review and provide a solution as soon as possible.